The Ruin by Joseph Mohr is a role playing game supplement published by Old School Role Playing for use with Cepheus Engine. As such, it is covered by the Open Game License and some parts are considered to be Open Game Content as a result.
The supplement is available as a 15 page Pay What You Want PDF from DriveThruRPG. Two pages are the front and rear covers, three the front matter and three the Open Game License.
The opening paragraphs explain how a mining company has been sending teams out to check for planets with useful minerals. The characters are hired to check on a world on the edge of the sector – the adventure is set in the Frontiers of Space – to see if there’s anything valuable.
Patron has details has details on the employer.
Complications are things that are not known or which can go wrong.
XV-9JN has some details on the planet.
Encounters in the XV-9JN System has a 2d6 table of encounters in the system. One of which is a comet with a 245-year orbit which has also been seen in the Sonora sector. Several parsecs away. For this to be true, the comet would have to be travelling at a measurable percentage of the speed of light and would not be orbiting anything.
Encounters on XV-9JN has another 2d6 table of encounters, this time for on the planet.
Probes explain how the probes can be used to scan the world.
Mineral Survey has results for the survey.
The Ruin has some brief details on an alien ruin.
The Aliens has some brief details on the aliens.
The Smugglers has stats for smugglers using the system.
DNA Evidence has data that can be found on the world.
Mission Completion explains what’s needed for the mission to be a success, and some on what might be done with information unnecessary for this but of value.
The final page of content has a map of the world.
The Ruin in Review
The PDF lacks bookmarks and is long enough with enough different sections that these would have been useful. Navigation is okay. The text maintains a single column format and some minor errors were noticed. Bar the map and covers, there are no illustrations. Presentation is okay.
This is a simple enough adventure, and there is a decent chance it will happen without any combat; the characters just heading to a star system, scanning a planet and going down to the surface and possibly collecting some more data. Other than that, there isn’t much to it. The Ruin can be found by clicking here.

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